level switch high high function

Level Sensors · One sensor detects a wide range of different media (liquids, bulk goods / grains, sticky or pasty media, high or low viscosity) - immune to foams 

Kenco® Oil Level Switch with S.P.D.T. Electric Switch in Explosion Proof Enclosure for Single High Level and Low Level Alarm (No Oil Level Controller Function).

Level switches are the most frequent level instrumentation; whether the measurement medium be liquid or solid. We offer level control and limit switching 

The world's most versatile float switch · Several level switches in a single float · Compact design and high reliability · Reliable operation in all conditions.

APPLICATION. The intrinsically safe or general purpose point level switch package provides high or low liquid level detection with one relay or reed switch output, and a compact junction box for wiring termination.Available in three level sensor technologies, choose the sensor type based upon your application media and classification.

The WT-HL2 includes the side mountable switch and float, making it a complete ready-to-deploy solution. The WT-HL2 utilizes on-delay exception reporting method and users can set the debounce filter ranging from 20 ms to 2000 ms to control just when the high level detection occurs. As a safety measure, regardless of state change, this device

Level Switches Level switches are the most frequent level instrumentation; whether the measurement medium be liquid or solid. We offer level control and limit switching for most media, from potable water, to sewage, alkalies and acids, or free-flowing, powdered, bulk or granular solids. HiTECH Technologies, Inc. Goop-proof RF Switches RF

The working principle of a level switch is easy to understand because it works like any alarm switch that turns on/off when the level of fluid 

High Water Level Liquid Level Control with Self-Holding Circuit (Three-pole Method) An extra electrode E 2 is added, and E 1 and E 2 are connected via contact a2 as shown in figure 4. When electrode E 1 is in contact with the conductive liquid (as in point 2 of previous section), relay X operates and switches to the a side.

4600 Series Liquid Level Switch - 1/4″ $ 69.00 - $ 114.00 Select options 3 4700 Series Liquid Level Switch - 1/4″ $ 64.00 - $ 182.00 Select options 4800 Series Liquid Level Switch - PVC $ 65.00 Add to cart 11 4900 Series $ 55.00 - $ 96.00 Select options LEVEL SWITCHES Skimp on your level switch and you're flirting with disaster.

4100 HLAS High Level Alarm Switch The 4100 HLAS High Level Alarm Switch is the most reliable redundant displacer switch (warning device) used for overfill prevention. For more information on Overfill Prevention, see API 2350. Theory of Operation The GSI 4100 HLAS is a mechanically activated displacer switch.

The main function of a level switch is to determine whether a material or liquid reaches a certain value, and once it reaches that value, a signal can be 

6/22 · Single or dual actuation (high / high-high) Switch of desired length sold separately Wiring plug eliminates wiring hassle Up to a 10-year battery life Supports Over-the-Air (OTA)

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LE series EX-Proof High-Frequency Level Switch Point-to-Point level measurement with high and low point detection. It can be mounted 

Alternative Meanings. LSHH - Level Switch High for Level Above LSH. LSHH - Level Switch High High. LSHH - Lead Safe and Healthy Homes. 3 other LSHH meanings.

To install the level switch consider the following points for correct level measurement: Keep the sensor at least 50 mm (2″) away from any nozzle or tank wall. If multiple units are used, allow at least 100 mm (4″) between them, to prevent interference (mount diagonally if space is restricted). High level alarm Normally mounted into the vessel top

In level control applications they are used for automated refilling for low and high-level liquid level processes. The switches can prevent 

zdas04 (Mechanical) 25 Nov 14 11:29. "High high" is physically higher in the vessel than the "high" alarm. The only reason for two set points is that they do different stuff. Most often in my experience, the high level gives you an alarm, but no process changes. The high-high is often connected to a shutdown or some other major process change.

The following P&ID of a compressed air control system shows both uses of process switches: The “ PSH ” (pressure switch, high) activates when the air pressure inside the vessel reaches its high control point. The “ PSL ” (pressure switch, low) activates when the air pressure inside the vessel drops down to its low control point.

The high alarm switch values shall be taken at the contact break point when the input value is rising. The low alarm switch values shall be taken at the contact break point when the input value is falling. The alarm and differential gap between alarm and reset shall be noted and recorded on approved calibration form.